Texas Instruments CD4081BE-NG

Overview

CD4081BE-NG from Texas Instruments is a quad 2-input AND gate CMOS logic IC in a 14-pin PDIP package, operating from 3 V to 18 V supply, with typical propagation delay of 90 ns at 5 V and 30 ns at 15 V, used in digital control sequencing, power-on reset logic, and discrete combinational logic blocks.

For engineers reviewing the CD4081BE-NG datasheet, CD4081BE-NG pinout, CD4081BE-NG application, or CD4081BE-NG equivalent, this page provides verified pin functions, real-world timing behavior across voltage rails, RoHS-compliant packaging details, and validated drop-in alternatives for legacy industrial and aerospace designs.

Technical Context

The CD4081BE-NG implements four independent AND gates using standard CMOS silicon process technology, with rail-to-rail input voltage tolerance (V_SS to V_DD) and symmetrical output drive capability (±4.2 mA at V_DD = 15 V). It belongs to the CD4000B series, sharing identical AC/DC electrical specifications with CD4081B variants.

No internal pull-ups or Schmitt-trigger inputs are present; all inputs require defined logic levels. The device supports operation over –55°C to +125°C and exhibits static discharge immunity per MIL-STD-883 Class 3B (≥2 kV HBM).

Key Specifications

Pinout & Package

CD4081BE-NG uses a 14-pin plastic dual-in-line package (PDIP-N), 19.15 mm × 6.22 mm footprint, 3.3 mm height, with 2.54 mm lead pitch and through-hole mounting compatibility.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar AND gate applications.

Compared with CD4081BM96, CD4081BE-NG offers through-hole manufacturability and legacy repairability; compared with MC14081BDG, it delivers guaranteed operation to +125°C and documented ESD robustness essential for field-deployed systems.

Availability

CD4081BE-NG is available at Aetrix Electronics and suitable for industrial control logic, aerospace power sequencing, and legacy instrumentation interface applications requiring stable component supply and long-term obsolescence management.

Supply support for CD4081BE-NG includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and logic solutions with over 50 years of high-reliability component heritage.

The CD4000B series - including CD4081BE-NG - was designed for ruggedized digital logic in harsh environments, supporting military, aerospace, and industrial applications where wide voltage range and extreme temperature operation are mandatory.

FAQ

What is the maximum operating frequency of CD4081BE-NG?

The CD4081BE-NG does not specify a maximum clock frequency because it is a combinational logic device without internal clocking. Its usable speed is determined by propagation delay: 90 ns typical at 5 V and 30 ns at 15 V. This allows reliable operation in asynchronous logic paths with signal transitions up to ~11 MHz (at 5 V) or ~33 MHz (at 15 V) before cumulative delay becomes limiting. Always verify timing margins in the target circuit using worst-case V_DD and temperature conditions.

Is CD4081BE-NG pin-compatible with CD4081B variants from other manufacturers?

Yes, CD4081BE-NG is fully pin-compatible with all industry-standard CD4081B-family devices, including RCA CA4081, Intersil ICM7208, and ON Semiconductor MC14081B. All share identical 14-pin PDIP pinout, logic function mapping, and DC/AC electrical specifications. However, ensure matching temperature grade and qualification level (e.g., MIL-STD-883) if substituting into certified systems.

Does CD4081BE-NG require external pull-up or pull-down resistors on inputs?

No, CD4081BE-NG inputs are CMOS high-impedance and do not require external biasing under normal operation. However, floating inputs must be avoided - each input must be actively driven to V_SS or V_DD, or terminated via resistor to a defined rail if left unconnected in system design. Unbiased inputs can cause increased supply current, erratic output states, and potential device damage due to intermediate voltage stress.

Can CD4081BE-NG drive an LED directly?

Yes, CD4081BE-NG can drive a standard 2 mA LED directly when V_DD ≥ 9 V. At V_DD = 15 V, its output sink capability is –4.2 mA (min), sufficient for common anode configurations with series resistor. For V_DD = 5 V, output sink is –1.5 mA (min), limiting LED brightness; a transistor buffer is recommended for higher current or low-voltage operation. Always include current-limiting resistor calculated per actual V_DD and LED forward voltage.

What is the meaning of the "-NG" suffix in CD4081BE-NG?

The "-NG" suffix in CD4081BE-NG denotes a specific TI manufacturing lot designation indicating RoHS-compliant, lead-free (Pb-Free) construction with NiPdAu lead finish, per TI's eco-plan classification. It confirms compliance with EU RoHS Directive 2011/65/EU and TI's Green (RoHS & no Sb/Br) material policy. Electrically and mechanically, CD4081BE-NG is identical to CD4081BE and CD4081BEE4.